How to get members of BUILTIN\ADMINISTRATORS with Powershell

Question: How can I obtain a list of BUILTIN\Administrators members using Powershell ?

Answer: There is a Powershell cmdlet Get-LocalGroupMember. This cmdlet will give you a basic listing , it is then possible to perform a range of data manipulations according to your requirements . Here are some examples

--Example1 : get all members of the Server Local Administrators group 

Get-LocalGroupMember -Group "Administrators"

--Example 2: get all members of a Server Local Administrators group on a Remote server, get-localgroupmember doesn't currently support -computer switch

Invoke-Command -ComputerName [computer] -ScriptBlock {Get-LocalGroupMember -Name "Administrators"}

--Example 3: get all members of the Server Local Administrator Group , including SID & Object Class 

Get-LocalGroupMember -Group "Administrators" | Select-Object *

--Example 4: get all members of the Server Local Administrator Group ,sort by Name  

Get-LocalGroupMember -Group "Administrators" | Sort-Object Name

--Example 5 : get or check  members from the Server Local Administrator Group , where a specific member exists.Using Powershell Where-Object

Invoke-Command -ComputerName MyServer1 -ScriptBlock {Get-LocalGroupMember -Group "Administrators" | Select-Object Name | Where-Object {$_.Name -eq 'MYDOMAIN\my_ad_Group'}}

More reading on Powershell & Users

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How to list Windows users with Powershell